STUDYING THE BREAKTHROUGH TIIIIE FOR STRONGLY ACIDIC CATION EXCHANGERS
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Abstract
f-he airn of'this research is to study the breakthrough time for cation exchangers by using a pilot plant of iotr exchange and passing water with different concentrations of hardness. The piiot plant oonsisted of one colurnn containing strongly acidic cation exchanger of styrene divinylLenenzene type. The study covered the effects of the flow rate (1.013 --5.067) L/hr, bed depth (0.1 - 0.5) m,
and hardness concentration (200-500) ppm on breakthrough rime for cation -exchangerr. io u
column witl: (2.5 cm in diameter. Box-Wilson cornposite ratatable design method was adopted in the designing the experimental work" -I'hi.s method proposed secclnd order polynomial mathernatical moclel and their coefficients
are estinLatecl through non -- linear regression analysis to correlate the response function (breakthn:ugh tirne) with the three variables (flow rate, bed depth, trnd hardness concentratiorr).
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Al-Sherrawi, M' H. M., (1995), Elastic Analysis of Steel Cellular Plate Structures with Non parallel Webs and Diaphragms, Thesis presented for the degree of Master of Science, Department of Civil Engineering, University of Baghdad, Iraq
Al-Dulaimy, R, A. (2001), Static and free vibration analysis of steel cellular plates and cellular hyperbolic paraboloid shells by grillage analogy. Thesis presented for the degree of Doctor of Philosophy. Department of Civil Engineering. University of Baghdad, Iraq.
Al-Dussary,M.H., (2001). Elstic analysis of steel cellular plate structure of non papallel webs and diaphrams with inclusion warping effects by grillage analogy. Thesis presented for the degree of Master of Science. Department of Civil Engineering, University of Baghdad, Iraq.
Evans, H. R. and Shanmugam. N. E. March, (1979)An Approximate Grillage Approach to the Analysis of Cellular Structures, Proceedings, Institution of Civil Engineers, Part 2, 67., pp. 133.154.
Hambly. E. C. and Pennels, E. (1975), Grillage Analysis Applied to Cellular Bridge Decks. The Structural Engineer, Vol. 53. No. 7. July, pp. 267-275.
Moffat. K. R. and Dowling, P J..(1975), Shear Lag in Steel Box Girder Bridge. The Structural Engineer, Vol. 53, No. 10. October, pp. 439-448.
Mohammed. H. (1994), Elastic Analysis of Steel Cellular Plate Structures Constructed by Double Parallel Plates with Webs and Diaphragms. Thesis presented for the Degree of Master of Science, Department of Civil Engineering, University of Baghdad, Iraq
Tan.TC and Montague P (1991). A Simple Grillage Analogy for the Analysis of Steel Sandwich Panels with Penetrations, The Structural Engineering, London, UK..69 271-276
Vlasov V Z (1961). Thin-walled elastic beams, National Science Foundation, USA
Waldron P 1986), Sectorial Properties of Straight Thin-Walled Bearn, Computers and Structures, Vol 24, No.1.pp.147-156
Waldron,P. ,(1987), Equivalent Beam Analysis of Thin-Walled Structures, Computers and Structures,Vol. 26,No.4,pp.609 -620
Yoo, CH.H. and Acra,S.V. ,(1986), Cross Section Properties of Thin-Walled Multi-Cellular Section, Computers and Structures,Vol.22.No. 4,pp. 5 3 -6 I .